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All Journal Jurnal Bios Logos Jurnal Biologi Tropis JOURNAL LA MEDIHEALTICO
Ramadanil, Ramadanil
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Health Professions Immunology & microbiology Medicine & Pharmacology Nursing Public Health Veterinary

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The Relationship Between Working Time and Fatigue of Online Motorcycle Taxi Drivers in Medan Ramadanil, Ramadanil; Susilawati, Susilawati; Hasibuan, Rapotan
Journal La Medihealtico Vol. 5 No. 4 (2024): Journal La Medihealtico
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamedihealtico.v5i4.1496

Abstract

A common problem among online motorcycle taxi drivers that can negatively affect their health and performance is fatigue. One factor that can reduce the level of fatigue is long working hours. Excessive working time can increase work errors due to increased fatigue and reduced sleep hours. This study aims to determine the effect of working time on fatigue of online motorcycle taxi drivers in the field of struggle. This research is quantitative using observational analytic method with cross sectional approach with univariate and bivariate analysis using chi-square test. The sampling technique with total sampling of 97 online motorcycle taxi riders. This study shows that there is an effect of working time with fatigue in online motorcycle taxi drivers in Medan city with a significance value of 0.00 <0.05. this study is that there is a relationship between the effect of working time and fatigue of online motorcycle taxi drivers in the city of Medan and for online motorcycle taxi drivers in the city of Medan to pay more attention to conditions while working, and not to work late at night. Because it can cause fatigue and worsen their sleep quality so as to develop a degree of health and safety in driving.
Ornamental Palm Species of Palu City, Central Sulawesi, Indonesia Tiwatu, Amila Farwizah; Ramadanil, Ramadanil; Bilbina, Zahwa Arzeti; Cahyani, Regita; Nugraha, Muhammad Ardian Satrio; Amar, Amar; Sangadji, Muhd Nur
JURNAL BIOS LOGOS Vol. 14 No. 3 (2024): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v14i3.58284

Abstract

A research-entitled ornamental palm species of Palu city, central Sulawesi, Indonesia has been conducted from May to September 2024.  The goal of the study was to document ornamental palm in Palu City. The direct observation through botanical exploration method was performed to inventory ornamental plant in 8 districts of Palu. All ornamental palms samples were collected and photographed then identified at the Laboratory of Plant Biosystematics, Department of Biology, Faculty of Mathematics and Natural Sciences and the Herbarium Celebense (CEB), Tadulako University Palu. Additional data included local name, botanical name, family, plant habitus (life form), were noted. Specimens with their label were deposited  at CEB, Tadulako University Palu, Indonesia. There were 16 (sixteen) ornamental palms namely: Areca cathechu, Cocos nucifera, Phoenix dactilyfera, Elaeis guineensis, Cyrtostachys renda, Corypha utan, Roystonia regia, Saribus rotundifolius, Wodyetia bifurcata, Adonidia merrilii, Hyophorbe lagenicaulis, Chrysalidocarpus decaryi, Bismarckia nobilis, Chamaedorea elegans, Licuala grandis, and Rhapis excelsa
Anatomy of Sarcotheca celebica’s vegetative organs growing in Morowali on Ultramafic and Limestone Soils Harso, Wahyu; Rasyiid, Mustafid; Ramadanil, Ramadanil; Umrah, Umrah; Iqbal, Moh.
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i2.8626

Abstract

Sarcotheca celebica is an endemic Sulawesi plant capable of growing in ultramafic and calcareous soils. The anatomical structure of its vegetative organs plays a role in adaptation to extreme environments. This study aimed to compare the anatomy of leaves, stems and roots of S. celebica in both soil types. Microscopic preparations of leaves, stems and roots were made with the Free Hand Section method, documented using Optilab Viewer 2.2, and measured with Image Raster 3. Statistical analysis was conducted with the T-test. The results showed anatomical variations in response to soil conditions. S. celebica plants in calcareous soil had longer and wider stomata, but with lower density than those in ultramafic soils. In addition, leaf and cuticle thickness were higher in S. celebica plants on calcareous soils. However, the peridemis/floem ratio in stems and peridermis/endodermis in roots did not show significant differences. Overall, S. celebica leaves were more responsive to soil differences than stems and roots. This study is important for understanding the mechanisms of plant adaptation to extreme soil conditions and the implications for the sustainability of the species in its natural habitat.
Co-Authors Amar Amar Bilbina, Zahwa Arzeti Cahyani, Regita Moh. Iqbal, Moh. Mustafid Rasyiid Nugraha, Muhammad Ardian Satrio Rapotan Hasibuan Sangadji, Muhammad Nur Susilawati, Susilawati Tiwatu, Amila Farwizah Umrah Umrah Wahyu Harso